Avast aloof aardvark!

The answer is that they are all English words that come either directly or indirectly from Dutch.

Avast, a nautical term meaning “hold!” or “stop!” is probably a contraction to the Dutch phrase houd vast (hold fast).

Aloof comes from the Dutch loef (the lee or weather side of a ship) via the Middle English loof (weather gauge / windward direction). It was originally a nautical instruction to keep a ship heading into wind.